The SM-R720 is the non-3G, Bluetooth-only version of the Gear S2. The final official firmware versions generally fall under the builds, based on the Tizen 2.3.2 or early 4.0 platforms. Where to Download
Press and hold the button on your watch until the "Rebooting..." screen appears.
Standard Samsung Odin works for physical connections. NetOdin (version 3.10 or higher) is required if you are flashing the firmware wirelessly over a local Wi-Fi connection. Samsung Gear S2 Sm-r720 Firmware Download
The process will take several minutes. Do not disconnect your PC Wi-Fi, turn off the router, or disturb the watch during this time. Once finished, NetOdin will display a green message, and your Gear S2 will automatically reboot into its freshly installed factory operating system. Troubleshooting Common Flashing Issues
Resolving instances where the watch is stuck on the Samsung logo. The SM-R720 is the non-3G, Bluetooth-only version of
Search for and connect to the network network broadcasted by your watch. Step 5: Configure NetOdin and Flash
You can find official firmware mirrors on sites like SamMobile or SamFrew . Common firmware builds for the SM-R720 include: (Often cited as a stable late-stage version) R720XXU2EPK5 R720XXU2BPA4 2. Essential Tools Standard Samsung Odin works for physical connections
(Ensure this is the Bluetooth version, not the 3G SM-R730).
If your watch is working fine, do not flash firmware. Only attempt this if you are experiencing critical bugs, are stuck in a bootloop, or need to change the device language via a region change. For most users, the "Over the Air" (OTA) updates via the Samsung Wearables app on your phone are the only safe method.